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- ***********************************************
- * Type II fibronectin collagen-binding domain *
- ***********************************************
-
- Fibronectin is a plasma protein that binds cell surfaces and various compounds
- including collagen, fibrin, heparin, DNA, and actin. The major part of the
- sequence of fibronectin consists of the repetition of three types of domains,
- which are called type I, II, and III [1]. Type II domain is approximately
- forty residues long, contains four conserved cysteines involved in disulfide
- bonds and is part of the collagen-binding region of fibronectin. In
- fibronectin the type II domain is duplicated. Type II domains have also been
- found in the following proteins:
-
- - Blood coagulation factor XII (once).
- - Bovine seminal plasma proteins PDC-109 (BSP-A1/A2) and BSP-A3 [2] (twice).
- - Cation-independent mannose-6-phosphate receptor (which is also the insulin-
- like growth factor II receptor) [3] (once).
- - Mannose receptor of macrophages [4] (once).
- - 72 Kd type IV collagenase (EC 3.4.24.24) (MMP-2) [5] (three times).
- - Hepatocyte growth factor activator [6] (once).
-
- A schematic representation of the position of the invariant residues and the
- topology of the disulfide bonds in fibronectin type II domain is shown below.
-
- +----------------------+
- | |
- xxCxxPFx#xxxxxxxCxxxxxxxxWCxxxxx#xxx#x#Cxx
- | |
- +-----------------------+
-
- 'C': conserved cysteine involved in a disulfide bond.
- '#': large hydrophobic residue.
-
- Our consensus pattern spans the entire domain.
-
- -Consensus pattern: C-x(2)-P-F-x-[FYW]-x(7)-C-x(8,10)-W-C-x(4)-[DN]-[FYW]-
- x(3,5)-[FYW]-x-[FYW]-C
- [The four C's are involved in disulfide bonds]
- -Sequences known to belong to this class detected by the pattern: ALL.
- -Other sequence(s) detected in SWISS-PROT: NONE.
- -Last update: June 1994 / Text revised.
-
- [ 1] Skorstengaard K., Jensen M.S., Sahl P., Petersen T.E., Magnusson S.
- Eur. J. Biochem. 161:441-453(1986).
- [ 2] Seidah N.G., Manjunath P., Rochemont J., Sairam M.R., Chretien M.
- Biochem. J. 243:195-203(1987).
- [ 3] Kornfeld S.
- Annu. Rev. Biochem. 61:307-330(1992).
- [ 4] Taylor M.E., Conary J.T., Lennartz M.R., Stahl P.D., Drickamer K.
- J. Biol. Chem. 265:12156-12162(1990).
- [ 5] Collier I.E., Wilhelm S.M., Eisen A.Z., Marmer B.L., Grant G.A.,
- Seltzer J.L., Kronberger A., He C., Bauer E.A., Goldberg G.I.
- J. Biol. Chem. 263:6579-6587(1988).
- [ 6] Miyazawa K., Shimomura T., Kitamura A., Kondo J., Morimoto Y.,
- Kitamura N.
- J. Biol. Chem. 268:10024-10028(1993).
-